Thanks for the kind words, Stephen.
It is indeed Peco track, a conscious (and somewhat unusual) choice based on a couple conditions.
I'm somewhat the lone cry in the bush for an O scaler in America as I personally find the very idea of many happy hours whiled away hand-laying track not so much an avenue to mindfulness but a death march. I can do it when I have to (and that's as good as it gets) but I truly hate it and no amount of strong drink can take the edge off that most mind-numbing of tasks, inner peace be damned.
The second is this railroad was built from the off as an operations platform rather than a work of art or photography platform, these photographs showing the overall design and flavour:


We host a regular (albeit an informally organised) operations club here as well as visiting ops groups, so reliability becomes arguably the most important of competing criteria, a reliability that the likes of Atlas turnouts fail to achieve.
I'm an old 7mm modeller so not only was I heavily invested in Peco (especially points/turnouts) but very comfortable with the reliability, especially as compared to my experiences with the consistency of the likes of Atlas or my abilities to suffer the purgatory of handlaying this with even a pious hope of achieving the quality the desired reliability would require.
One thing that further enhances reliability in an ops platform is standardisation. We use a standard coupler, standard trucks and wheels, standard power supply components, all of which are backed up with spares to hand. Same goes for turnouts; not only are Peco reliable onto themselves, but I keep spares of the frog-power microswitches and of complete turnouts on the shelf.
While the track in between is a mix of Roco and Peco, the points are standardised on Peco and they have given me no cause to regret the decision.